September · Germany
Best time to visit Cologne in September Weather, crowds & prices
Weather in Cologne in September
Average temperature 17°C, 100 mm of rain, about 26 days with 6+ hours of sunshine and 77% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.0/10
Ranked #5 of 12 months
- Avg temp
- 17°C
- Rainfall
- 100 mm
- Humidity
- 77%
- Days with 6h+ sun
- 26
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Cologne scores 8.0/10 for sightseeing and cultural travel - an above-average month (#5 of 12). Expect around 17°C, 100 mm of rain, and roughly 26 days with 6+ hours of sunshine this month.
Cologne's twin-spired cathedral rises over a Rhine city of Roman roots and a famous carnival.
September holds up well in Cologne — 5th best month
Temperatures hover around 17°C (62°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 100 mm of rain this month — a flexible day or two helps — with about 26 days with 6+ hours of sunshine and 12.6 hours of daylight to work around it.
That is 8/10 on the same scale — 5th of 12 months, versus 8.9/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Cologne in September?
- In September, Cologne averages 17°C, 100 mm of rain, and about 26 days with 6+ hours of sunshine. Its climate-comfort score is 8.0/10.
- Is September a good time to visit Cologne?
- September earns a 8.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cologne in September?
- Expect about 100 mm of rain in September. Average humidity is 77% and there are about 26 days with 6+ hours of sunshine.
Curated in Cologne
Tickets & experiences
Things to do in Cologne
Cologne, Germany. Live activities and tours from GetYourGuide, matched to this destination.